Software, Version 2.1 Owner's manual

Section 6 Data Analysis Module
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6.9.7 Graphing Options for Expression Data
Graph Expression Relative to Control or Relative to Zero
These options, shown in Figure 6.50, allow you to present data with bars originating at 1 (relative
to control) or at zero (relative to zero). If you assign a control in your dataset, selecting the
option to graph data relative to control allows you to quickly visualize upregulation and
downregulation. The values graphed are exactly the same.
Fig. 6.50. Graphing Options for Displaying Gene Expression Data.
y-Axis Options
This option allows you to display the graph with the y-axis in log2 or linear scale as shown in
Figure 6.51. The log2 scale is useful when you evaluate samples across a large dynamic range.
Fig. 6.51. Options for Displaying the y-axis on the Gene Expression Chart.